2 * Copyright (C) 2004 PaulReynolds@lhsolutions.com
5 * Stefan Roese, DENX Software Engineering, sr@denx.de.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/processor.h>
30 #include <spd_sdram.h>
31 #include <ppc4xx_enet.h>
33 DECLARE_GLOBAL_DATA_PTR;
35 #define BOOT_SMALL_FLASH 32 /* 00100000 */
36 #define FLASH_ONBD_N 2 /* 00000010 */
37 #define FLASH_SRAM_SEL 1 /* 00000001 */
39 long int fixed_sdram (void);
40 void fpga_init (void);
42 int board_early_init_f (void)
45 unsigned char *fpga_base = (unsigned char *) CFG_FPGA_BASE;
46 unsigned char switch_status;
47 unsigned long cs0_base;
48 unsigned long cs0_size;
49 unsigned long cs0_twt;
50 unsigned long cs2_base;
51 unsigned long cs2_size;
52 unsigned long cs2_twt;
54 /*-------------------------------------------------------------------------+
55 | Initialize EBC CONFIG
56 +-------------------------------------------------------------------------*/
57 mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
58 EBC_CFG_PTD_ENABLE | EBC_CFG_RTC_64PERCLK |
59 EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
60 EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_NONDEFAULT |
61 EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
63 /*-------------------------------------------------------------------------+
64 | FPGA. Initialize bank 7 with default values.
65 +-------------------------------------------------------------------------*/
66 mtebc(pb7ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
68 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
69 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
70 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
71 EBC_BXAP_BEM_WRITEONLY|
72 EBC_BXAP_PEN_DISABLED);
73 mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)|
74 EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
76 /* read FPGA base register FPGA_REG0 */
77 switch_status = *fpga_base;
79 if (switch_status & 0x40) {
80 cs0_base = 0xFFE00000;
81 cs0_size = EBC_BXCR_BS_2MB;
83 cs2_base = 0xFF800000;
84 cs2_size = EBC_BXCR_BS_4MB;
87 cs0_base = 0xFFC00000;
88 cs0_size = EBC_BXCR_BS_4MB;
90 cs2_base = 0xFF800000;
91 cs2_size = EBC_BXCR_BS_2MB;
95 /*-------------------------------------------------------------------------+
96 | 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
97 +-------------------------------------------------------------------------*/
98 mtebc(pb0ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs0_twt)|
100 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
101 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
102 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
103 EBC_BXAP_BEM_WRITEONLY|
104 EBC_BXAP_PEN_DISABLED);
105 mtebc(pb0cr, EBC_BXCR_BAS_ENCODE(cs0_base)|
106 cs0_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
108 /*-------------------------------------------------------------------------+
109 | 8KB NVRAM/RTC. Initialize bank 1 with default values.
110 +-------------------------------------------------------------------------*/
111 mtebc(pb1ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(10)|
112 EBC_BXAP_BCE_DISABLE|
113 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
114 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
115 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
116 EBC_BXAP_BEM_WRITEONLY|
117 EBC_BXAP_PEN_DISABLED);
118 mtebc(pb1cr, EBC_BXCR_BAS_ENCODE(0x48000000)|
119 EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
121 /*-------------------------------------------------------------------------+
122 | 4 MB FLASH. Initialize bank 2 with default values.
123 +-------------------------------------------------------------------------*/
124 mtebc(pb2ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs2_twt)|
125 EBC_BXAP_BCE_DISABLE|
126 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
127 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
128 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
129 EBC_BXAP_BEM_WRITEONLY|
130 EBC_BXAP_PEN_DISABLED);
131 mtebc(pb2cr, EBC_BXCR_BAS_ENCODE(cs2_base)|
132 cs2_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
134 /*-------------------------------------------------------------------------+
135 | FPGA. Initialize bank 7 with default values.
136 +-------------------------------------------------------------------------*/
137 mtebc(pb7ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
138 EBC_BXAP_BCE_DISABLE|
139 EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
140 EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
141 EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
142 EBC_BXAP_BEM_WRITEONLY|
143 EBC_BXAP_PEN_DISABLED);
144 mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)|
145 EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
147 /*--------------------------------------------------------------------
148 * Setup the interrupt controller polarities, triggers, etc.
149 *-------------------------------------------------------------------*/
150 mtdcr (uic0sr, 0xffffffff); /* clear all */
151 mtdcr (uic0er, 0x00000000); /* disable all */
152 mtdcr (uic0cr, 0x00000009); /* SMI & UIC1 crit are critical */
153 mtdcr (uic0pr, 0xfffffe13); /* per ref-board manual */
154 mtdcr (uic0tr, 0x01c00008); /* per ref-board manual */
155 mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */
156 mtdcr (uic0sr, 0xffffffff); /* clear all */
158 mtdcr (uic1sr, 0xffffffff); /* clear all */
159 mtdcr (uic1er, 0x00000000); /* disable all */
160 mtdcr (uic1cr, 0x00000000); /* all non-critical */
161 mtdcr (uic1pr, 0xffffe0ff); /* per ref-board manual */
162 mtdcr (uic1tr, 0x00ffc000); /* per ref-board manual */
163 mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */
164 mtdcr (uic1sr, 0xffffffff); /* clear all */
166 mtdcr (uic2sr, 0xffffffff); /* clear all */
167 mtdcr (uic2er, 0x00000000); /* disable all */
168 mtdcr (uic2cr, 0x00000000); /* all non-critical */
169 mtdcr (uic2pr, 0xffffffff); /* per ref-board manual */
170 mtdcr (uic2tr, 0x00ff8c0f); /* per ref-board manual */
171 mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
172 mtdcr (uic2sr, 0xffffffff); /* clear all */
174 mtdcr (uicb0sr, 0xfc000000); /* clear all */
175 mtdcr (uicb0er, 0x00000000); /* disable all */
176 mtdcr (uicb0cr, 0x00000000); /* all non-critical */
177 mtdcr (uicb0pr, 0xfc000000); /* */
178 mtdcr (uicb0tr, 0x00000000); /* */
179 mtdcr (uicb0vr, 0x00000001); /* */
180 mfsdr (sdr_mfr, mfr);
181 mfr &= ~SDR0_MFR_ECS_MASK;
182 /* mtsdr(sdr_mfr, mfr); */
189 int checkboard (void)
191 char *s = getenv ("serial#");
193 printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board");
204 long int initdram (int board_type)
208 #if defined(CONFIG_SPD_EEPROM)
209 dram_size = spd_sdram ();
211 dram_size = fixed_sdram ();
217 #if defined(CFG_DRAM_TEST)
220 uint *pstart = (uint *) 0x00000000;
221 uint *pend = (uint *) 0x08000000;
224 for (p = pstart; p < pend; p++)
227 for (p = pstart; p < pend; p++) {
228 if (*p != 0xaaaaaaaa) {
229 printf ("SDRAM test fails at: %08x\n", (uint) p);
234 for (p = pstart; p < pend; p++)
237 for (p = pstart; p < pend; p++) {
238 if (*p != 0x55555555) {
239 printf ("SDRAM test fails at: %08x\n", (uint) p);
247 #if !defined(CONFIG_SPD_EEPROM)
248 /*************************************************************************
249 * fixed sdram init -- doesn't use serial presence detect.
251 * Assumes: 128 MB, non-ECC, non-registered
254 ************************************************************************/
255 long int fixed_sdram (void)
259 /*--------------------------------------------------------------------
261 *------------------------------------------------------------------*/
262 mtsdram (mem_uabba, 0x00000000); /* ubba=0 (default) */
263 mtsdram (mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
264 mtsdram (mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
265 mtsdram (mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
266 mtsdram (mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
268 /*--------------------------------------------------------------------
269 * Setup for board-specific specific mem
270 *------------------------------------------------------------------*/
272 * Following for CAS Latency = 2.5 @ 133 MHz PLB
274 mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
275 mtsdram (mem_tr0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
277 mtsdram (mem_tr1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
278 mtsdram (mem_rtr, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
279 mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */
280 udelay (400); /* Delay 200 usecs (min) */
282 /*--------------------------------------------------------------------
283 * Enable the controller, then wait for DCEN to complete
284 *------------------------------------------------------------------*/
285 mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
287 mfsdram (mem_mcsts, reg);
288 if (reg & 0x80000000)
292 return (128 * 1024 * 1024); /* 128 MB */
294 #endif /* !defined(CONFIG_SPD_EEPROM) */
297 /*************************************************************************
300 * This routine is called just prior to registering the hose and gives
301 * the board the opportunity to check things. Returning a value of zero
302 * indicates that things are bad & PCI initialization should be aborted.
304 * Different boards may wish to customize the pci controller structure
305 * (add regions, override default access routines, etc) or perform
306 * certain pre-initialization actions.
308 ************************************************************************/
309 #if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
310 int pci_pre_init(struct pci_controller * hose )
314 /*--------------------------------------------------------------------------+
315 * The ocotea board is always configured as the host & requires the
316 * PCI arbiter to be enabled.
317 *--------------------------------------------------------------------------*/
318 mfsdr(sdr_sdstp1, strap);
319 if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
320 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
326 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
328 /*************************************************************************
331 * The bootstrap configuration provides default settings for the pci
332 * inbound map (PIM). But the bootstrap config choices are limited and
333 * may not be sufficient for a given board.
335 ************************************************************************/
336 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
337 void pci_target_init(struct pci_controller * hose )
339 /*--------------------------------------------------------------------------+
341 *--------------------------------------------------------------------------*/
342 out32r( PCIX0_PIM0SA, 0 ); /* disable */
343 out32r( PCIX0_PIM1SA, 0 ); /* disable */
344 out32r( PCIX0_PIM2SA, 0 ); /* disable */
345 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
347 /*--------------------------------------------------------------------------+
348 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
349 * options to not support sizes such as 128/256 MB.
350 *--------------------------------------------------------------------------*/
351 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
352 out32r( PCIX0_PIM0LAH, 0 );
353 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
355 out32r( PCIX0_BAR0, 0 );
357 /*--------------------------------------------------------------------------+
358 * Program the board's subsystem id/vendor id
359 *--------------------------------------------------------------------------*/
360 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
361 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
363 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
365 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
368 /*************************************************************************
371 * This routine is called to determine if a pci scan should be
372 * performed. With various hardware environments (especially cPCI and
373 * PPMC) it's insufficient to depend on the state of the arbiter enable
374 * bit in the strap register, or generic host/adapter assumptions.
376 * Rather than hard-code a bad assumption in the general 440 code, the
377 * 440 pci code requires the board to decide at runtime.
379 * Return 0 for adapter mode, non-zero for host (monarch) mode.
382 ************************************************************************/
383 #if defined(CONFIG_PCI)
384 int is_pci_host(struct pci_controller *hose)
386 /* The ocotea board is always configured as host. */
389 #endif /* defined(CONFIG_PCI) */
395 unsigned long sdr0_pfc0;
396 unsigned long sdr0_pfc1;
397 unsigned long sdr0_cust0;
400 mfsdr (sdr_pfc0, sdr0_pfc0);
401 mfsdr (sdr_pfc1, sdr0_pfc1);
402 group = SDR0_PFC1_EPS_DECODE(sdr0_pfc1);
405 sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_GEIE_MASK) | SDR0_PFC0_GEIE_TRE;
406 if ( ((pvr == PVR_440GX_RA) || (pvr == PVR_440GX_RB)) && ((group == 4) || (group == 5))) {
407 sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_DISABLE;
408 sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
409 out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
410 FPGA_REG2_EXT_INTFACE_ENABLE);
411 mtsdr (sdr_pfc0, sdr0_pfc0);
412 mtsdr (sdr_pfc1, sdr0_pfc1);
414 sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_ENABLE;
421 out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
422 FPGA_REG2_EXT_INTFACE_ENABLE);
423 sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
424 mtsdr (sdr_pfc0, sdr0_pfc0);
425 mtsdr (sdr_pfc1, sdr0_pfc1);
431 /* CPU trace B - Over EBMI */
432 sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_CPUTRACE;
433 mtsdr (sdr_pfc0, sdr0_pfc0);
434 mtsdr (sdr_pfc1, sdr0_pfc1);
435 out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
436 FPGA_REG2_EXT_INTFACE_DISABLE);
441 /* Initialize the ethernet specific functions in the fpga */
442 mfsdr(sdr_pfc1, sdr0_pfc1);
443 mfsdr(sdr_cust0, sdr0_cust0);
444 if ( (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) == 4) &&
445 ((SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII) ||
446 (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_TBI)))
448 if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
450 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
451 FPGA_REG3_ENET_GROUP7);
455 if (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII)
457 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
458 FPGA_REG3_ENET_GROUP7);
462 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
463 FPGA_REG3_ENET_GROUP8);
469 if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
471 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
472 FPGA_REG3_ENET_ENCODE1(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
476 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
477 FPGA_REG3_ENET_ENCODE2(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
480 out8(FPGA_REG4, FPGA_REG4_GPHY_MODE10 |
481 FPGA_REG4_GPHY_MODE100 | FPGA_REG4_GPHY_MODE1000 |
482 FPGA_REG4_GPHY_FRC_DPLX | FPGA_REG4_CONNECT_PHYS);
484 /* reset the gigabyte phy if necessary */
485 if (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) >= 3)
487 if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
489 out8(FPGA_REG3, in8(FPGA_REG3) & ~FPGA_REG3_GIGABIT_RESET_DISABLE);
491 out8(FPGA_REG3, in8(FPGA_REG3) | FPGA_REG3_GIGABIT_RESET_DISABLE);
495 out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_GIGABIT_RESET_DISABLE);
497 out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_GIGABIT_RESET_DISABLE);
502 * new Ocotea with Rev. F (pass 3) chips has SMII PHY reset
504 if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER2) {
505 out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_SMII_RESET_DISABLE);
507 out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_SMII_RESET_DISABLE);
510 /* Turn off the LED's */
511 out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_STAT_MASK) |
512 FPGA_REG3_STAT_LED8_DISAB | FPGA_REG3_STAT_LED4_DISAB |
513 FPGA_REG3_STAT_LED2_DISAB | FPGA_REG3_STAT_LED1_DISAB);
520 * Returns 1 if keys pressed to start the power-on long-running tests
521 * Called from board_init_f().
523 int post_hotkeys_pressed(void)